package com.example.lib;

public class Singleton {
    private  volatile  static  Singleton singleton;
    private  Singleton(){}
        public static Singleton getSingleton() {
            if (singleton == null) {
                synchronized (Singleton.class) {
                    if (singleton == null) {
                        singleton = new Singleton();
                    }
                }
            }
            return  singleton;


        }

}
